Apparatus for casting metal.



No. 788,334. PATENTED APR. 25, 1905.

J. SCOTT.

APPARATUS FOR CASTING METAL.

APPLICATION FILED AUG. 31, 1899.

6 SHEETS-SHEET l.

WITNESSES INVENTOR w I AM M 17W WW N0.7ss.3s4. IPATENTED APR.25,19O5.J.SGOTT.'

APPARATUS FOR CASTING METAL.

APPLICATION FILED AUG. 31, 1899.

wrruessss mvzmon 6. W 7 yd-1w PATENTBD APR. 25, 1905.

J. SCOTT.

APPARATUS FOR CASTING METAL. APPLICATION FILED we; 31, 1899.

6 SHEETS-SHEET 3.

WlTNESSES No. 788,334. PATENTED APR. 25, 1905.

J. SCOTT: APPARATUS FOR CASTING METAL.

APPLICATION FILED AUG. 31, 1899.

6 SHEETS-SHEET 4.

WITNESSES INVENTOR Maw.

PATENTED APR. 25, 1905.

J. SCOTT. APPARATUS FOR CASTING METAL.

APPLICATION FILED AUG. 31, 1899.

6 SHEETS-SHEET 5.

INVENTOR WITNESSES M14 M q PATENTEYD APR. 25, 1905.

J. SCOTT.

APPARATUS FOR CASTING METAL.

APPLICATION FILED AUG. 31, 1899.

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INVENTOR yam M NITED STATES A Patented April 25, 1905.

PATENT OFFICE.

JAMES SCOTT, OF PITTSBURG, PENNSYLVANIA, ASSIGNOR TO AMERICAN CASTINGMACHINE COMPANY, OF PITTSBURG, PENNSYLVANIA, A COR- PORATION OF NEWJERSEY.

APPARATUS FOR CASTING METAL.

SPECIFICATION forming part of Letters Patent No. 788,334, dated April25, 1905.

Application filed August 31, 1899. Serial No. 729,097.

1'!) (all, whom it may concern:

Be it known that I, JAMES Soo'rr, of Pittsburg, in the county ofAllegheny and State of Pennsylvania, have invented a new and usefulImprovement in Apparatus for Casting Metal,

of which the following is a full, clear, and exactdescription,referencebeing had to the accompanying drawings, forming part of thisspecification, in which i IO Figure l is a diagrammatic plan view ofcasting apparatus constructed in accordance with my invention. Fig. 2 isa sectional side elevation of the receiving end of the apparatus. Fig. 3is a plan view of the same, and

5 Fig. 4 is a transverse section taken on the line TV IV of Fig. 2. Fig.5 is a sectional side elevation ofa series of the molds used. Fig. 5 isa plan view of one of the molds. Fig. 6 is a side elevation of a portionof the carriertrack at the pouring end, and Fig. 7 is a plan View of thesame. Fig. 8 is a cross-sectional View of the track portion shown inFig. 5. Fig. 9 is a plan view, partly broken away, of the chute at thedischarge end of the appara- 5 tus; and Fig. 10 is a sectional sideelevation showing the discharge end of the apparatus with the chute inplace.

My invention relates to apparatus for easting metal, such as shown anddescribed in 3 Letters Patent No. 548,146, granted to Edward A. Uehlingon October 15, 1885, and is especially adapted for the casting ofpig-iron, though it may be used in casting other metals, such as lead,copper, &c.

The object of the invention is to improve the construction of suchapparatus, to pre vent its injury by the molten metal, to lengthen thelife of the apparatus, and to simplify the construction.

4 To that end the invention consists in certain constructions andarrangements of the parts, as hereinafter more fully described, and setforth in the claims.

In the drawings, referring to Figs. 1, 2, 3,

and 4, 2 represents a track for the ladle-car Whichconveys the moltenmetalto the casting apparatus. This track is carried on a suitable frame3. The molten metal is poured from such ladle-car into a pouring-pothaving lateral oppositely-directed discharge-troughs 5 4L 4, leadingfrom a central well 5, and provided with a longitudinalrearwardly-extending trough 6. The pot is mounted upon front and reartrunnions 7 7 and may be tilted sidewise bya rod 8, pivotally connectedto astandard 9 on the pot and having at its outer end a screw-threadedportion engaged by an internally-threaded hand-wheel 10, carried in astationary support 11. By turning the handwheel in either direction thepot may be tilted on its trunnions and the flow of metal thus increasedthrough either of the side troughs, and at the end of the pouringoperation the metal in the central well may be discharged by furthertilting of the pot. Thesidespouts 5 discharge the molten metal into twosets of molds 12 12, each set being carried upon a chain 18, carriedupon end sprocket-wheels l t, and to prevent the molten iron fromcontacting with the carrier, as Well as to hasten 7 the solidificationof the molten metal in the molds, 1 provide Water-pans l5,\vhich extendover the carriers and are provided with recessed portions 16 around thespouts 4. Each pan preferably extends longitudinally beyond the limitsof the pouring-pot and is made with an inclined bottom, as shown in Fig.2, to bring itinto parallelism with the line of movement of the molds,the carrier preferably extending upwardly from the feeding toward thedischarge end. A water-supply is fed into each pan through a pipe 17near the shallow end and is taken off by the overflowoutlet pipe 18 nearthe other end. As the waterpan preferably covers the molds and 8 5chains, it prevents particles of molten iron from entering the links ofthe carrier and also assists in cooling the metal in the molds withoutdirect contact with it.

The molds or buckets 19 for the metal are 9 of peculiar shape, as shownin Fig. 5, they being of greater width than length in the direction ofmovement and having side flanges 'spattering out sidewise upon thechain.

or cars 20. At each side edge above the flange is a projection 21 toprevent the metal from The rear end of the mold 22 is shorter than thefront end 23, and this front end terminates in a curved projectionhaving an upper sharp edge 24. The nose or projection overlaps the rearwall of the preceding mold, and the sharp edge divides the stream ofmetal from the spout, splitting the stream without spattering the metaloutwardly. Each mold is provided with a depending integralreinforcing-rib 25, giving an increased thickness of metal at thispointto provide for slower expansion and contraction. The ribstrengthens the mold at this point, which is liable to fracture whileadmitting the refractory wash, and gives this part of the mold the samerelative expansibility in its upper portions.

The molds may be mounted upon chains or carriers of any desirablecharacter in order to prevent injury to the workmen arising frombreakagein any part of the apparatus. I preferably provide drums over which thechains pass with pawl-and-ratchet connections 2'T,which in case ofbreakage prevent the recoil of the drums and to a certain extent thecollapse of the carrier. 26 represents the guardrails for the track 30,presently to be described. In order to prevent the heating of the linksof the chains and to cool and lubricate the links, I provide water-pipes28, which extend longitudinally above the chains and are provided atsuitable intervals with perforations, through which the water drops uponthe links and the rollers 29, carried therein, thus cooling andlubricating them without injuring the molds by sudden cooling.

In order to prevent difiiculty arising from iron which might spatterupon the flat track 30 for the rollers of the chains, I preferablyremove the track for a short distance each side of the pouring-spoutsand provide in its place a narrow vertical track 31, as shown in Figs.6, 7, and 8. This track is secured by suitable bolts 39. and is locatedin the center line of the main track, the rollers moving on this edgeportion.

At the discharge end of the apparatus I provide a chute 33, which iscommon to both sets of molds and is pivoted at its rear end to theframework 34, its other end being supported upon rods 35, which extendup through the frame and are provided with surrounding spiral springs38, bearing upon adjustable nuts 39. The chute is composed of a seriesof parallel, bars 4:0, secured together upon the end rods 41, to one ofwhich the supporting links or rods 35 are connected.

A transverse conveyer 42 may be located beneath the outer end of thechute, or, if desired, a car or other receptacle may be placed at thispoint.

In using the apparatus the refractory material may be applied to theinterior of the molds on their return pass and at the point marked A inFig. 1 by any of the usual devices for this purpose. The chains beingactuated in the usual manner, the metal flowing from the pot through thelateral spouts enters and fills the continuously-traveling molds orbuckets. The buckets passing closely beneath the water-pans cause rapidcooling and solidifyingof the metal. The cooled pigs dropping at theopposite end of the chains onto the chute are thereby directed into areceptacle or upon a conveyer, and the molds are coated upon theirreturn travel by a spraying device or other apparatus used therefor.

The advantages of the invention result from preventing the molten ironfrom contacting with the chains, from the peculiar feeding device, fromthe rapid cooling of the metal, and the simplicity of the apparatus,which is not liable to get out of order.

Many variations may be made in the form and arrangement of the partswithout departing from my invention, since I claim 1. In castingapparatus, the combination with two or more adjacent sets of molds,having mechanism for moving them, of an intermediate casting-potprovided with a well, and troughs integral with and leading from it, andmeans for tilting the pot, whereby the liquid metal may be directed intoeither set of molds, or in equal or varying streams into both sets;substantially as described.

2. In casting apparatus, the combination with one or more sets of molds,of mechanism for moving them, and a casting-pot arranged to receivemolten metal, said pot having a well and one or more integral lateraltroughs, substantially as described.

3. In casting apparatus, the combination with molds, of means for movingthem horizontally, and a protective water-pan located above the line ofmovement of the molds, and sufficiently close thereto to aid in-thecooling of the contained metal; substantially as described.

4. In casting apparatus, the combination with molds, of means for movingthem, a pouring-pot having lateral discharge-troughs,

and a Water-pan extending above the molds and about the pot and arrangedto protect the mold-carrier from the molten metal and aid in cooling themolten metal; substantially as described.

5. In casting apparatus, a mold having at its sides upwardly-projectingsplashers; substantially as described.

6. In casting apparatus, the combination I frames, and at the other enda supporting- I With an endless carrier, and molds carried rod carriedby a vertically-extending springthereon, of a discharge-chute consistingof insupport; substantially as described.

clined parallel bars, having a spring-support- In testimony whereof Ihave hereunto set 5 ed carrying-rod; substantially as described. myhand.

7. In casting apparatus, the combination JAMES SCOTT. With an endlesscarrier having molds, of a dis- Witnesses: charge-chute composed ofparallel barshav- GEO. B. BLEMMING,

ing at one end a supporting-rod hinged to the C. BYRNES.

